How does it work?* The generator system consists of a generator transfer switch. The generator sits outside of your home or business just like an air conditioner, while the transfer switch is located next to the main breaker box, and in some cases, replaces it entirely.
* An automatic standby generator works by monitoring utility voltage constantly. When your electricity is interrupted, the generator detects the problem and goes to work. The automatic transfer switch safely disconnects the utility line and transfers to generator power. Power is simultaneously restored within seconds.

*You can find the above information along with even more information on the Generac website: http://www.generac.com/for-homeowners/home-backup-power/home-backup-products

Call Express today for your estimate, before you are left in the dark!